Signe Dagmar Charlotta Johansson-Engdahl (27 May 1905 – 9 May 2010)[1] was a Swedish diver.

She competed at the 1924 Summer Olympics in the 3 m springboard and placed fifth.

[2] From the death of Erna Sondheim on 9 January 2008 until her own death, she was believed to be the oldest living person to have competed in the Olympic games.

[3][4] She was married to the Olympic runner Nils Engdahl, and her sister-in-law Märta Johansson was also an Olympic diver.

[5] This biographical article relating to Swedish diving is a stub.